Time Lapse: Run the Shamrock Shuffle in Less Than 4 Minutes

This year's Shamrock Shuffle, taking place March 25, will once again take runners on a route through downtown Chicago, starting and ending in Grant Park. Returning for its second year is the 2-mile lakefront walking course, which starts and finishes at the same spots as the 8K.

Registration is still open for both the 8K and 2-mile walk through the middle of the week of March 19 or until all the spots are filled.

Carey Pinkowski, the race's executive director, will join runners this year for the first time since 1988 to help raise money for the American Cancer Society. Participants can choose an optional $5 upcharge during registration that goes to one of the race's charitable partners.

Pinkowski finished in third place with a time 24:07 when he last ran. But don't be discouraged if you can't keep that pace; the minimum pace required is to finish the 8K in one hour and fifteen minutes.

More than 20,000 shufflers took to the streets for 2017's Bank of America Shamrock Shuffle.